Holder and carrier for blood-pipettes



T. LIDBERG. HOLDER AND CARRIER ron BLOOD PIPETTES.

APPLICATION FILED SEPT- 19, I919- Patented my 13,1920.

UNTTED STATES TIODOLF LIDBERG, OF CHICAGO, ILLINOIS.

HOLDER AND CARRIER FOR BLOOD-PIPETTES.

Specification of Letters Patent.

Patented May 18, 1920.

Application filed September 19, 1919. Serial No. 324,969.

To all whom it may concern Be it known that I, Tlononr Lrnnnno, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Holders and Carriers for Blood-Pipettes, of which the following is aspecification.

The invention relates to improvements in devices for closing, holdingand carrying open end pipettes.

The object of the invention is to provide a device for closing, holdingand carrying open end pipettes, in which the pipette or tube may bequickly inserted and easily withdrawn; which will protect the fragiletube against danger of being broken; which will effectively close bothends of the tube to prevent loss of its contents; which will readilycompensate for variation in length of tubes; which may be made toaccommodate a plurality of tubes and which is light, compact anddurable.

Other, further and more specific objects of the invention will becomereadily apparent to persons skilled in the art from a consideration ofthe following description when taken in conjunction with the drawings,wherein Figure 1 is an elevation of the holder and carrier.

Fig. 2 is a section taken on line 22 of Fi 1.

Tn both views the same reference characters are employed to indicatesimilar parts.

5 is a rectangular metal frame, which may be of any width, composed of astrip 6 that extends to both sides and ends. Between the ends 7 and 8 ofthe frame, and properly spaced apart are one or more rods, such as 9,10, 11 and 12, which are parallel with the side members of the frame andwith each other, and which are secured at their respective ends to theend members 7 and 8 of the frame. The rods are flattened for a portionof their length on one of their sides, as at 13, to provide a shoulder14:. They are shown to be round in cross section and on each of the rodsmovable on the flattened part is a vertically sliding head 15, having asocket within which a yielding substance, such for example as spongerubber 16, is inclosed. The head freely moves over the rod and theflattened ortion prevents the head from rotating. onnected to the headis a helical spring 17, as at 18. The spring surrounds the rod and isconnected to the bottom memher 8 of the frame, as at 19.. A socket 20,containing rubber 21, similar to the rubber cushion is, in the head 15,is located in vertical alinement with the head 15 at the bottom of therespective rods. The springs 17 tend to hold the heads 15 in theirdepressed positions, as shown by'the unengaged rod at the right side ofFig. 1. A pipette 22, or glass tube, open at its ends, is held invertical position, parallel with the rods, having its lower end insertedin the socket 20 and its upper end closed by the cushion in the socketsertion of thepipette, as shown to the left in Fig. 1, and theresiliency of the spring tends to hold the cushions 16 and 21 in therespective sockets, in intimate contact with the open ends of thepipette. This operates to hold the pipette well within the frame 5 andto maintain both ends of the pipette closed. To remove the pipette it isonly necessary to lift the head 15 until the upper end of the pipette isclear, whereupon it is lifted from the socket 20, whereupon the head 15will descend 011 its respective rod, until it encounters the shoulder14, where it will remain until again required. 7

In the drawings I have shown accommodations for four pipettes. It is, ofcourse, to to understood that any other number may be employed, or aframe may be made for the accommodation of a single pipette.

The device is very convenient for use by surgeons by whom the pipettesare employed for carrying samples of blood for analysis, and the like.

The cooperation of the rubber cushions with the springs, whileyieldingly holding the pipettes in place and closing their ends,protects them against any sudden jar or vibration to which the device asa whole may be subjected in transit, or otherwise, and at the same timethe open ended pipettes are hermetically sealed. Of course, if thepipettes were open at one end, only, the device may be used with equalconvenience, as the other or open end would be closed, by the meansshown, when inserted within the carrier.

Having described my invention, what I claim is 1. A device of thecharacter described having in combinative association 2. frame; a rodconnected at its ends to the top and bottom members of the frame; a headslidable on one end of the rod; a socket carried by the head, having ayielding material therein; another, similar socket fixed to the otherend of the frame and a spring for yieldingly moving the head from oneend of the rod toward the socket at the other end.

2. A device of the character described having in combinative associationa frame; a plurality of parallel spaced apart rods connected at theirends to the top and bottom ends of the frame; a head, slidable on oneend of each of the rods; a socket carried by each head having a yieldingmaterial therein; another similar socket for each head fixed to theother end of the frame and a spring, wound about each of the rods, foryieldingly moving the respective heads from one end of its rod towardthe cooperating socket at the other end thereof.

3. A device of the character described having incombinative associationa rod; a head slidable on one end of the rod; means to prevent rotationof the head; a yielding material carried by the head to seal one end ofa pipette; a similar material at the other end thereof, and a springwound about the rod connected to the head and at the lower end of therod to yieldingly hold the sealing means in contact with the ends of thepipette to be inserted between said means.

In testimony whereof I hereunto subscribe my name.

TIODOLF LIDBERG.

